M2 Knowledge gaps Flashcards
(10 cards)
1
Q
Relative isotopic mass
A
Mass of atoms of an isotope compared to 1/12th the mass of carbon-12
2
Q
Relative atomic mass
A
Weighted mean mass of atoms of an element compared to 1/12th the mass of carbon-12
3
Q
Define ‘mole’
A
Unit for amount of substance
4
Q
Cr electron configuration
A
1s2 2s2 2p6 3s2 3p6 3d5 4s1
5
Q
Fe 3+ electron configuration
A
1s2 2s2 2p6 3s2 3p6 3d5
6
Q
Cr 3+ electron configuration
A
1s2 2s2 2p6 3s2 3p6 3d3
7
Q
Fe electron configuration
A
1s2 2s2 2p6 3s2 3p6 3d6 4s2
8
Q
Cu electron configuration
A
1s2 2s2 2p6 3s2 3p6 3d10 4s1
9
Q
Zn 2+ electron configuration
A
1s2 2s2 2p6 3s2 3p6 3d10
10
Q
Define ‘average bond enthalpy’
A
Mean energy needed to break 1mol of covalent bonds in gaseous molecules
